Locking device

Locks – Operating mechanism – Key

Reexamination Certificate

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Details

C070S358000, C070S389000, C070S395000, C070S454000, C070S491000, C070S492000, C070SDIG063

Reexamination Certificate

active

11178817

ABSTRACT:
A locking device, which mounts a user key (the first key) and a manager key (the second key) separatedly, places a first lock and a second lock unitedly in an outer cylinder. The first lock is opened or rotated by the first key. After the first lock is open, the first key cannot be pulled out of the locking device. If the second lock is open by the second key, the first key can be pulled out together with the second key.

REFERENCES:
patent: 1382826 (1921-06-01), Dove
patent: 1644323 (1927-10-01), Borsody
patent: 1689875 (1928-10-01), Jacobi
patent: 1990933 (1935-02-01), Falk
patent: 2036764 (1936-04-01), Lowe
patent: 2220786 (1940-11-01), Grainger
patent: 2298697 (1942-10-01), Hofmann
patent: 2298698 (1942-10-01), Hofmann
patent: 2544305 (1951-03-01), Finke et al.
patent: 2783636 (1957-03-01), Scott
patent: 3008322 (1961-11-01), Stackhouse
patent: 3336774 (1967-08-01), Gray et al.
patent: 3656328 (1972-04-01), Hughes
patent: 3729964 (1973-05-01), Hsu
patent: 3863476 (1975-02-01), Patriquin
patent: 3941954 (1976-03-01), Wintringham
patent: 4100777 (1978-07-01), Fredon
patent: 4120184 (1978-10-01), Gerlach
patent: 4472952 (1984-09-01), Hollowell, Jr.
patent: 5010754 (1991-04-01), De Angelo et al.
patent: 5060491 (1991-10-01), Smith
patent: 5265454 (1993-11-01), Crocco et al.
patent: 5440909 (1995-08-01), Ely et al.
patent: 5475997 (1995-12-01), Chung
patent: 6058750 (2000-05-01), Li
patent: 6536244 (2003-03-01), Chang
patent: 6584819 (2003-07-01), Hung
patent: 6968716 (2005-11-01), Ling
patent: 0181643 (1998-12-01), None
patent: 20-0272537 (2002-04-01), None
International Search Report, Application No. PCT/KR2005/002197, mailed Sep. 12, 2005.

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